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Harry Ferguson Tractors Discussion Forum
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TEA SMOKED BATTERY CHARGER

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Peter (Ottawa)

03-14-2004 09:11:35




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Today I decided to check for spark on my 53 TE20 , . I connected my battery charger directly to the tractor,as I do not have a battery for it( + to starter swich, - to chassis ground) I set the charger to deliver max output ( up to 70 amps) . I then engaged the stick shift to the "s" position it turned over nicely , just then I noticed my battery charger smokimg like a train. I quickly unplugged it, let it cool down then opened it up, I smoked the primary coil on the transformer of the charger.No evidence of any short, coil resistance is the same ( 4 ohms).I'm baffled, any thoughts. The only other time i turned it over was in the fall when I used my jumper cables and from my truck and connected it the same way as today. It turned over nicely , worked great.

Thanks

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Jim W

03-14-2004 14:25:47




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 Re: TEA SMOKED BATTERY CHARGER in reply to Peter (Ottawa), 03-14-2004 09:11:35  
I think the starter draws far more than 70 amps. Seat of the pants estimate but I'd say more like 200.
Jim



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Peter(Ottawa)

03-14-2004 16:44:42




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 Re: Re: TEA SMOKED BATTERY CHARGER in reply to Jim W, 03-14-2004 14:25:47  
That sounds resonable. The TEA's are the same as today's cars, Positive is the red terminal and negative is the black/chassis ground?????

Thanks



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Jim W

03-14-2004 19:10:48




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 Re: Re: Re: TEA SMOKED BATTERY CHARGER in reply to Peter(Ottawa), 03-14-2004 16:44:42  
Whew, well, it could be either way...
They really were positive ground when they began their lives but a lot have been switched to negative ground. (I've had three and all were negative ground.)
I like to have negative ground simply because someday someone may go to boost it who wouldn't even think of positive ground as a possibility. (You start to feel old when you catch yourself saying "these young people!!....")
Best is to check the battery itself when you go to boost it.
Jim

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tractorfix

03-15-2004 18:54:33




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 Re: Re: Re: Re: TEA SMOKED BATTERY CHARGER in reply to Jim W, 03-14-2004 19:10:48  
Seems there's always something unexplainable going on in Ottawa these days!



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